Maintenance Specifications; Recommended Torques; Sae Bolts; Metric Bolts - MacDon A30-S Operator's Manual

7.3 MAINTENANCE SPECIFICATIONS

7.3.1

Recommended Torques

Tighten all bolts to the torques specified in
•
chart unless otherwise noted throughout this
manual.
Check tightness of bolts periodically, using
•
bolt torque chart as a guide.
Replace hardware with the same strength
•
bolt.
• Torque figures are valid for non-greased or
non-oiled threads and heads unless otherwise
specified. Do not grease or oil bolts or
capscrews unless specified in this manual.
When using locking elements, increase torque
values by 5%.
7.3.1.1

SAE Bolts

BOLT
DIA. "A" SAE 5
in.
lbf∙ft
1/4 9
5/16 18
3/8 32
7/16 50
1/2 75
9/16 110
5/8 150
3/4
265
7/8 420
1 640
* Torque categories for bolts and capscrews are identified by their
head markings.
Form # 169000
MAINTENANCE/SERVICE
NC BOLT TORQUE*
SAE 8
N·m lbf∙ft N·m
12 11 15
24 25 34
43 41 56
68 70 95
102 105 142
149 149 202
203 200 271
365 495
359
569 600 813
867 890 1205
SAE-5 SAE-8
7.3.1.2

Metric Bolts

BOLT
DIA.
"A"
lbf∙ft
M3
M4
M5
M6
M8
M10
M12
M14 103
M16 166
M20 321
M24 553
M30 1103
M36 1917
* Torque categories for bolts and capscrews are identified by their
head markings.
84
NC BOLT TORQUE*
8.8
N·m lbf∙ft
0.4 0.5 1.3
2.2 3 3.3
4 6 7
7 10 11
18 25 26
37 50 52
66 90 92
140 148
225 229
435 450
750 774
1495 1550
2600 2710
Model Year - 2009
10.9
N·m
1.8
4.5
9
15
35
70
125
200
310
610
1050
2100
3675